baber/WOPTO huggingface dataset:
Patent GB-309651-A (GB)
Title: Improvements in processes of and furnaces for extracting a metal from an ore
IPC: C21B13/00
Filed: 1928-01-26
Abstract: 309,651. Ekelund, S. C. G. Jan. 26, 1928. Metallurgical furnaces; tunnel furnaces. -In a furnace for reducing iron and other ores the charge is conveyed through a tunnel furnace on moving plates and like supports, and is preheated and reduced by a counter current stream of gas produced wholly or in part by a slagging gas producer, in which the fuel is burnt by an oxygen containing gas, preferably air. The charge fills substantially the whole cross section of the furnace. In the furnace plant shown diagrammatically in plan in Fig. 1 gas from a slagging gas producer 2, in which gas circulation may be established as described in Specification 301,241, [Class 55 (i), Coking &c.], is supplied to the tunnel at one end of the main reduction zone C, and a part is withdrawn as. surplus gas at the other end of the zone and passed through a dust chamber 7 and recuperator 9. Air is heated in the recuperator and supplied by a blower 11 to the producer 2. The remaining gas passes through a preliminary reducing-zone B and is burnt with air from a blower 14 in the preheating-zone A. The ore is fed in through a roof opening 15, which may be surmounted by a charge-containing shaft, and after passing through the zones A, Band C is cooled in the zone D by gas from a second producer 4 preferably of the non- slagging type. In a modified form of plant the cooling is effected by the surplus gas from the recuperator 9. Charging and discharging.-The charge supports consist of flanged bottom plates 1, Figs. 3 and 4, shaped to fit guide rails 11, and formed with wedge-shaped side projections. To each of these plates a vertical end frame 5 is secured by hooks 10 and bolts 9, the frame being formed, with bevelled side members 5, vertical strengthening bars 6 and inclined cross members 7. The plates move in a layer of sand in the furnace bottom. The frame is made of semi-steel, non- oxidizing steel or high carbon steel surfacetreated with aluminium. The vertical frames may be dispensed with if the tunnel is of trapezium or rounded cross section, and in this case the finished charge may be pushed off the plates and removed through an opening in the side wall of the tunnel. The height of the tunnel may decrease either gradually or in steps in the direction of movement of the charge to compensate for shrinkage, and when the roof is stepped the portions at different levels are connected by inclines. Preferably the finer portions of the charge are put at the top of the load. The supports carrying the reduced ore may be pushed from the tunnel into an electric melting-furnace where the whole is melted down.
Patent GB-124018-A (GB)
Title: Improvements relating to Alternating Current Dynamo-electric Machines adapted for Synchronous Working.
IPC: H02K19/14
Filed: 1918-02-13
Abstract: 124,018. Hunt, L. J., and Sandycroft, Ltd. Feh. 13, 1918. Alternating-current induction machines; motors, controlling. - In the method of starting alternating-current dynamo-electric machines having windings on the rotor adapted to operate in cascade and to co-operate with a direct current field on the stator at synchronous speed in which the slip-rings 11, 16, Fig. 1, connected to opposite points in the rotor winding are connected together through resistances 2 which are decreased simultaneously until the slip-rings 16 can be short-circuited and the slip-rings 11 can be open-circuited, as described in Specification 24837/14, resistances 20 are connected across the slip-rings 16 before being short-circuited. In a modification, the resistances 20 and short-circuiting switch 22 are dispensed with and the resistances 3 connected together at their mid-points by a bar 23, Fig. 2. The contacts 19 are moved to the left until they reach the connecting-bar 23 when the slip-rings 11 are open-circuited, or the bar 23 may be inserted when the required speed has been approximately obtained and the slip-rings 16 then short-circuited by a separate switch, or by moving the bar 23 to the right until it reaches the contacts 19. Specifications 9261/13, 24838/14, and 15113/15 also are referred to.
Patent GB-1330954-A (GB)
Title: Tape dispensers
IPC: B65H35/00
Filed: 1971-01-19
Abstract: 1330954 Tape dispensers HENKEL & CIE GmbH 19 Jan 1971 [22 Jan 1970] 2665/71 Heading A4G A manual tape dispenser has tape 4 passing from roll 1 over a ribbed roller 5 carrying a gear 11 and carried at one end of lever 9 pivoted on frame 3 and under roller 6, the tape then passing over a small roller 7 to be cut on knife 8. On pulling tape end 4a, roller 5 is depressed against compression spring 10 and gear 11 engages rack 12 to move it up to an adjustable stop 14 against spring 13. On cutting off the measured length of tape, spring 10 raises roller 5 on lever 9 which retracts the tape a small amount which then rotates roller 7 to which the tape adheres so that the free end portion 4a between roller 7 and knife 8 is orientated upwardly for grasping and pulling off the next measured length. On rising, the gear 5 releases the rack which is returned by spring 13.
Patent GB-682405-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D29/10
Filed: 1950-02-02
Abstract: 682,405. Centrifugal pumps. DUNLOP RUBBER CO., Ltd., and DIBDEN, T. J. R. Jan. 22. 1951 [Feb. 2, 1950], No. 2693/50. Class 110(i) A centrifugal pump comprises an impeller having blades 37, 40 formed on either side of a plate 36, a portion of the impeller hub 33 projecting into a recess 25 formed in the casing adjacent the shaft bearing 16, the casing wall and the impeller hub being inwardly curved towards the plate 36 at 48 and 42 respectively so that liquid which approaches the bearing 16 is directed towards the roots of the blades 40. The pump is especially suitable for pumping rubber latex, but may also be used for other suspensions, such as paper pulp. Before starting, water is supplied through a connection 24 to an annular chamber 22 situated between the bearing 16 and a stuffing box 18. When the pump is running, the blades 40, which are of greater radial extent than the blades 37, reduce the flow of latex inwards towards the bearing 16. Latex leaking inwardly through the clearance 41 is guided by the curved portions 42, 48 towards the blades 40. Latex reaching an annular knife edge 46 is flung towards the blades 40. If it reaches annular knife edges 45, it is flung into annular grooves 26, from which it descends into an axially extending groove 28 which delivers it to the blades 40. As a final barrier, an annular shroud 29 which projects into a recess 32 in the hub 33 and curves away from the recess at its lower end, directs any latex reaching it into the groove 28. A small trickle of water may be allowed to flow continuously to the chamber 22 while the pump is running.
Patent GB-1395182-A (GB)
Title: Machines for harvesting kale rape and the like
IPC: A01D45/00
Filed: 1972-01-20
Abstract: 1395182 Kale harvester W W WARDROP 17 April 1973 [20 Jan 1972] 2713/72 Heading A1F In a tractor hauled kale harvesting machine, the crop cut by cutters 30 is picked up by reels 31 with projecting tines 31A and transferred to a tined transverse slotted elevating conveyor which transports the crop through an open trough 10 to discharge it into a trailer 57. The coveyor, trough, cutters, reels and power transmissions are all mounted on or supported from a free running, two wheeled framework, and drive is from the tractor p.t.o. The trough 10, supported at an upward inclination by braces 26-29, welded to a chassis 18-21, has sprockets 11, 14 mounted at each end on each side. The sprockets are entrained by endless chains 15, 16 connected by transverse slots 17 with projecting tines 18 forming an endless conveyor, the upper run of which passes through trough 10 while the lower run passes below. An adjustable reciprocal fiingered or counter rotating bladed cutter 30 is mounted on the chassis transverse to the lower forward end of the conveyor, and a tined, crop pick-up reel drum 31 is positioned above it. The cutters 30, the trough 10 and the drum 31 extend two thirds across the width of the chassis the remaining third of the chassis track containing a gear box 32 and drive transmission elements. Drive from the hauling tractor p.t.o. powers the reel drum 31 and upper sprockets 11 of the conveyor from the gear box 32 through a series of reduction pulleys and V-belts. The cutters 30 are directly driven from the p.t.o. shaft 33 through a roller series of reduction pulleys and V-belts. A draw bar 61 couples the harvesting machine to the tractor, and the trailer 57 is attached to the harvester by an automatic hitch 62. Both the harvester and the trailer 57 are equipped with supporting jacks 65, 64 respectively.
Patent GB-1388828-A (GB)
Title: Syringes
IPC: A61M5/315
Filed: 1971-01-20
Abstract: 1388828 Syringes HOECHST UK LTD 20 April 1972 [20 Jan 1971] 2749/71 Heading A5R A surgical syringe has an element 10 located between a piston 3 and one end of the cylinder 5 to limit the stroke of a piston 3 in the cylinder 5. The element is fitted detachably to the face of the piston by a member 16. The cannula 12 is supported by a tubular casing 1 coupled to the piston rod 2 which has a bore for communication between the cylinder 5 and the cannula 2. As the piston is pushed into the cylinder 5 against the action of a spring 7, vaccine is forced through the member 16, along the bore of the piston rod 2, through a one-way valve 8 to the cannula 12. As the piston is withdrawn by the spring 7 vaccine is drawn into the cylinder 5 through a one-way valve 9. The element may be a cup-shaped body of polypropylene or a plastics sleeve. The body of the syringe may be of polycarbonate. A cover 15 is provided through which the cannula protrudes.
Patent GB-1214014-A (GB)
Title: Valve assembly for fluid digital systems
Inventor: CLARK HARRY RUSSELL
IPC: F15C3/04
Filed: 1968-01-18
Abstract: 1,214,014. Fluid logic valve. QUALTER, HALL & CO. Ltd. 15 Jan., 1969 [18 Jan., 1968], No. 2850/68. Heading G4P. A fluid digital valve assembly (Fig. 1) comprises a valve 1 comprising a block 5 containing plunger 7 and a ball 8. The ball is springloaded against a shoulder to cut off inlet 12 from outlet 13 unless plunger 7 is moved downward. The plunger has a bore 17 and radial ports 18 allow pressure in port 13 to vent through the lowest outlet 23 when the plunger is disengaged from the ball. A stack of identical units 2, 3, 4 and a cover 30 are clamped to block 5. Each unit comprises radial ports 23, 24 and an axial bore receiving a separate stem 25. A flexible diaphragm 27 is peripherally clamped between adjacent bodies 19. A lost motion gap between the end of plunger 7 and the lowest stem 25 allows plunger 7 to lift for venting pressure in port 13. In a modification (Fig. 2, not shown) the lowest stem lies within the bore of the lowest unit, whose face is contacted by the flanged end of the plunger, urged by a surrounding spring, so that a lost motion gap normally exists between the lower end of the plunger and the ball. In operation as an OR gate, with zero pneumatic pressure at ports 24, input pressure on any port 23 but the lowest forces the diaphragm, and hence the stem or stems, downward to open valve 1. As an AND gate, balance pressure is applied at one or more ports 24 so that the valve opens only on application of pressure at a greater number of ports 23. NOR or NAND operation is obtainable by applying balance pressures at ports 23 and input pressures at ports 24, and memory operation by supplying a proportion of the output signal over a port 23 to retain valve 1 open so long as output is present; cancellable by momentary input signal to a port 24. Poppet, piston, spool, and slide valves may be used, and the output may control generators of the control inputs or sensing devices.
Patent GB-219601-A (GB)
Title: Improvements in and relating to railway rail joints
IPC: E01B11/10
Filed: 1924-02-04
Abstract: 219,601. Wilson, W. G. Feb. 4, 1924. Rail - joints, bridge. Fishplates 12, 13 with a centre part 21 supporting the rail base have end and side walls 22, 23, the side walls 23 being connected by a sleeve 24 having an aperture 25 for a bolt 26, and the end walls 22 at one side abutting against a sleeper, the fishplates being strengthened by a bead 23<1>.
Patent GB-1452400-A (GB)
Title: Melt spinning of refractory polymers
IPC: D01D5/08
Filed: 1974-01-22
Abstract: 1452400 Melt spinning refractory polymers AMERICAN CYANAMID CO 22 Jan 1974 [5 Feb 1973 2 March 1973 23 March 1973 10 April 1973 5 July 1973] 02985/74 Heading B5B Shaped articles including filaments and films, are prepared by extruding a single phase fusion melt of a refractory polymer esp. acrylonitrile, but also other high melting point polymers, and a melt assistant i.e. a substance which is capable, when used under pressure sufficient to prevent boiling at temperatures above its atmospheric boiling point, of reducing the melting point of the refractory polymer to a temperature below the degradation range of the polymer, other than normal solvents for the polymer, at a temperature Tf which is above the single phase melt melting point temperature M and also above the boiling point at atmospheric pressure of said melt assistant through a spinnerette directly into a pressurized solidification zone wherein the following conditions obtain (1) there is a partial pressure of melt assistant such that the composition profile across the crosssection of the nascent extrudate so produced remains relatively flat: (2) the concentration of melt assistant retained in said nascent extrudate remains at a value at least 70% of the concentration of melt assistant in said single phase fusion melt, and (3) the temperature of the nascent extrudate is below said temperature Tf but not lower than 20 C. below said temperature M. Preferred melt assistants are 1-4C-alkanols, acetonitrile, formic or acetic acids, water or a dilute solution of an inorganic salt in water, the solution being too dilute to act as a solvent for acrylonitrile. Thus a blended mixture of polymer and melt assistant is extruded through a spinnerette 12 into a pressurized chamber 13 and the filaments 21 are drawn under tension by a rotary godet or thread advancing rolls 22 and then wound up on yarn package 30 or relaxed in a steam chamber 33 prior to wind up.
Patent GB-368768-A (GB)
Title: Re-setting means for liquid flow control apparatus
IPC: C02F1/42
Filed: 1930-10-31
Abstract: 368,768. Liquid-meters ; electricallyactuated valves. DOUGLAS, J., 31, Bishop's Mansions, Bishop's Park, London. Oct. 31, 1930, No. 3019/32. Divided on 366,915. [Classes 69 (i) and 135.] Apparatus having a member, moving in response to a flow of liquid and which serves to initiate movement or mechanism for controlling the ljqnid flow, is provided with means, operatively connected with the mechanism, for resetting the moving member. In the particular example described, the indicator arm of a liquid meter, after a given amount of liquid has passed, makes contact to close the circuit of an electric motor which operates by reducing gear a plug cock controlling the liquid flow. Cams on the spindle of the plug cock are connected by a Bowden wire to rack gear by which an arm is operated to push back the indicator arm of the meter to its initial position or to an intermediate position from which a smaller total flow is measured before the next cycle of operations is repeated. Figs. 1 and 2 illustrate the rack gear. An arm 52 which resets the indicator arm of the meter is carried at one end of a spindle 51 mounted in a frame 45. The Bowden wire 65 is connected to a frame 46 sliding in the frame 45 and carrying a rack, which engages a pinion on the spindle 51. A complete resetting movement is limited by the contact of an arm 54 on the spindle 51 with an adjustable stop 55 but between two such movements there may be a shorter resetting movement limited by a stop 58, which is withdrawn, when the longer movement is to take place, by movement of the rack or by a second Bowden wire operated by a cam on the spindle of the plug cock. A spring 62 returns the frame 46 to its initial position. Specification 366,915 is referred to. The Provisional Specification describes apparatus in which a meter drives a rack, which in its extreme position releases a pawl and allows a mercury switch in the motor circuit to close, the rack being reset by a spring- loaded arm operated by cams on the driven shaft.
Patent GB-624666-A (GB)
Title: Improvements relating to cores for electric transformers and chokes
IPC: H01F27/245
Filed: 1947-01-31
Abstract: 624,666. Transformers and inductances. ENGLISH ELECTRIC CO., and CHADWICK, A. T. Jan. 31, 1947, No. 3059. [Class 38 (ii)] A ferro-magnetic core of a transformer or choke made of steel having a best magnetic direction comprises three or more laminated parallel limbs as at 10, the planes of the laminµ and the best magnetic direction being parallel to the lengths of the limbs, and end yokes 13, 14 of substantially cylindrical laminµ, having their best magnetic direction arranged circumferentially. The end yokes may be made by closely coiling a strip of magnetic material and may have half the cross-sectional area of the limbs. The limbs and yokes may be secured together by means of bands 15 or by spiders and a central bolt. With this construction the laminµ of limb and yokes at the abutting surfaces are substantially parallel and the magnetic path can be wholly in the best magnetic direction.
Patent GB-246318-A (GB)
Title: Improvements in detachable wearing pads for the heels of boots or shoes
IPC: A43B21/40
Filed: 1925-02-04
Abstract: 246,318. Geary. T. Feb. 4, 1925. Protectors, securing. - A detachable heel pad 5 is attached to a bevelled sliding plate 4 which engages a correspondingly bevelled plate 1 upon the permanent part of the heel. The plate 4 may be bevelled at the back, where it engages the plate 1 if required. To prevent accidental removal of the heel pad the plate 1 has a projecting shoulder 7 engaging the material forming the pad proper.
Patent GB-430763-A (GB)
Title: Improvements in and relating to direct current electric circuits employing fine wire coils
IPC: H02J1/04
Filed: 1934-02-01
Abstract: 430,763. Protective arrangements. COATES, R. H., Farnam Lodge, Farnam Road, Streatham, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, both in London. Feb. 1, 1934, No. 3390. [Class 38 (iv)] Fine wire coils &c., on an insulated D.C. system 1, 2 which may, due to damp location, be subject to electrolytic corrosion due to earth currents are protected by biassing the positive side of the system with a potential negative with respect to earth. This is effected by means of a dry rectifier 5 or other source of D.C. connected between the positive line and earth through a resistance 9. The values of the biassing voltage, the resistance 9, leakage resistances 11, 12 of the system and maximum permissible fault current are related to one another, and the resistance 9 may be provided with a tap whereby part thereof may be short-circuited depending upon the leakage resistance of the system. A voltmeter may be provided. for measuring the voltage applied between the line and earth. The arrangement may be arranged in a unitary device comprising a transformer 4, rectifier 5, resistance 9 and a voltmeter which may be connected in circuit by a push button.
Patent GB-489766-A (GB)
Title: Improvements in kettles and like boiling or heating utensils
IPC: A47J27/212
Filed: 1937-02-03
Abstract: 489,766. Kettles &c. SELLMAN, E. Feb. 3, 1937, No. 3143. [Class 66] The bottom of a kettle &c. for use with an electric hot plate is provided adjacent to the junction with the side wall with an inwardly directed annular groove 5. The bottom, which may be of thin metal of the same thickness as the wall and is stiffened by radial grooves 7, is disposed below the level of the side wall, to which it is attached by spinning.
Patent GB-216068-A (GB)
Title: Improvements in curve pulleys for rope or cable haulage systems
IPC: F16N7/00
Filed: 1924-02-11
Abstract: 216,068. Williams, S. E. Feb. 11, 1924. Channels and reservoirs in pulleys for cable haulage systems of the kind in which a base-plate is formed with a vertical axle hollowed to provide an inner well for lubricant, and a cup on the baseplate constitutes an outer well for the reception of the boss of the pulley. The base-plate 1 is formed with an integral vertical axle 2, which is hollowed to provide an inner well 3, and with an upstanding ring or cup 5 forming an outer well surrounding the boss of the pulley loosely. The pulley boss contacts directly with the vertical axle, and apertures 6 afford direct communication between the inner well and the bearing surface of the boss. A cap 9, secured to the central peg 4, is formed with a central polygonal projection which fits in the top of the inner well.
Patent GB-908186-A (GB)
Title: Reflex klystron
IPC: H01J25/24
Filed: 1960-02-01
Abstract: 908,186. Velocity modulated tubes. EITELMcCULLOUGH Inc. Feb. 1, 1960 [March 18, 1959], No. 3462/60. Class 39 (1). A reflex klystron comprises an electron gun in which the focusing electrode 52, 54 is gridless and the gun anode 62 has a smaller diameter at the gun end than at the cavity resonator end, the resonator having a ceramic tuning plug 90. The reflector is so contoured by means of a frusto-conical recess containing a conical spike 134 that the electrons on and near the axis are deflected and thus have the same transit times as the edge electrons, so as to improve the bunching of the returning electrons. The stepped diameter of the gun anode 62 and the successively larger diameters of the grids 136, 137 are such as to allow the beam to diverge (no magnetic focusing field being provided), good bunching being nevertheless assured by the above shaping of the reflector. The cathode-focusing electrode assembly and reflector electrode are carried from ceramic discs 22, 116, an exhaust tube 118 being provided at the reflector end. Central prong 26 has an index key 28. The seals between the ceramic discs 22, 116 and body portion 16 are by way of U-shaped and Z-shaped ring 30, 68; 30<SP>1</SP>, 68<SP>1</SP>, brazed to 16, 30, 30<SP>1</SP>. The cathode and reflector assemblies are assembled separately, then 30, 68, 30<SP>1</SP>, 68<SP>1</SP> are arc welded together. A flanged cathode mounting bar 32 is attached to two diametrically opposite prongs and a cathode support tube 34 is welded to bar 32. A ceramic disc 46 holds the heater leads and the dished cathode is supported by a heat shield 36. The focusing electrodes comprise two L-shaped rings 52, 54 welded to tube 50 and spaced apart axially. The interior of 16 is accurately formed so resonator part 63 can be press fitted therein. Rectangular output waveguide has ceramic window 75. A sealing ring 78 is brazed to a step on the window, and a ceramic backing ring 82 is brazed to 78 after which flange 83 is brazed to support 72. A rectangular ceramic tuning slug 90 is carried by a mechanism which includes metal bellows 92 and ball bearing 106. Cooling fins 56 are provided. The resonator grids each have radial molybdenum vanes suspended from the outer perihery, leaving the centre open.